CN108833066A

CN108833066A - Base station equipment, terminal device and communication system

Info

Publication number: CN108833066A
Application number: CN201810564749.7A
Authority: CN
Inventors: 崔琪楣; 曾亮; 韩江; 张映霓
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2018-11-16
Also published as: US10820308B2; JP2015536079A; CN103716917B; WO2014048184A1; US20150282128A1; JP6090453B2; CN103716917A

Abstract

Disclose a kind of base station equipment, terminal device and communication system.Configuration ePDCCH base station equipment include：Blank resource particle determines part, for the system configuration information according to communication system, determines Physical Resource Block to blank resource particle not used in PRB-pair；EPDCCH position indication information determines part, for according with information and channel quality information according to the system configuration information of communication system, Terminal Equipment Identifier, determines the ePDCCH position indication information for being used to indicate position of the ePDCCH in terminal device search space；And bearing part, for ePDCCH position indication information to be carried to blank resource particle to obtain the subframe of the signaling comprising carrying ePDCCH position indication information, and terminal device is sent by subframe.

Description

Base station equipment, terminal device and communication system

The application be the applying date be September in 2012 29, application No. is 201210376253.X, entitled " base station The divisional application of the application for a patent for invention of equipment, terminal device and communication system ".

Technical field

The present invention relates generally to wireless communication fields, relate more specifically to Universal Mobile Communication System (UMTS) long term evolution Subsequent evolution (LTE-A) in configuration enhancing Physical Downlink Control Channel (ePDCCH) base station equipment and method, detection The terminal device and method and communication system of ePDCCH.

Background technique

Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS) technology Long term evolution (Long Term Evolution, LTE) be the 3rd generation partner program (3rd Generation Partnership Project, 3GPP) the maximum new technology development project that started in recent years, this technology can be seen At being " quasi- 4G technology ".LTE-A (LTE-Advanced) is the subsequent evolution of LTE, and 3GPP completed the skill of LTE-A in 2008 Art statement of requirements proposes the minimum essential requirement of LTE-A：Downlink peak rates 1Gbps, upstream peak rate 500Mbps, uplink and downlink Peaks spectrum utilization rate respectively reaches 15Mbps/Hz and 30Mbps/Hz.In order to meet the various demand parameters of 4G technology, 3GPP Several key technologies are proposed for LTE-A, including carrier wave polymerize, cooperative multi-point sends and receives, multiple antennas enhances.

Under being carried in Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) Row control information (Downlink Control Information, DCI) includes the resource on one or more terminal devices point With information and other control information.In LTE, the resource scheduling information of uplink and downlink is carried by PDCCH.It is general next Say in a subframe, there can be multiple PDCCH.Terminal device needs to demodulate the DCI in PDCCH first, then can be Demodulation belongs to Physical Downlink Shared Channel (the Physical Downlink of terminal device oneself on corresponding resource location Shared Channel, PDSCH), wherein PDSCH includes broadcast message, paging, the data etc. of terminal device.

Now, in the version after LTE-R10 to carrier wave polymerization, cooperative multi-point sends and receives, multiple antennas enhances Etc. key technologies dispatching requirement, 3GPP standardization in propose ePDCCH (Enhanced PDCCH), to increase control The capacity of information, and can support the technologies such as wave beam forming, diversity, inter-cell interference deletion.The lattice supported in view of ePDCCH Formula is more and more, and terminal equipment side blind Detecting number increases to current version from 44 times in previous version (Rel.8/Rel.9) (Rel.10) 60 times in, and also will continue to increase in future version.In the design of PDCCH, terminal device is not known The placement location of its PDCCH can only carry out blind Detecting in entire search space, and in the design of PDCCH, there is no have A large amount of blank resource particles (Resource Element, RE) of rule, therefore can not be indicated by way of signaling.Cause This, the computational complexity of terminal equipment side is high in the prior art.

Summary of the invention

It,, can be there are under most systems configuration in the design of ePDCCH compared with PDCCH in the prior art The a considerable number of blank resource particle of rule.Based on this, the invention proposes a kind of configurations to enhance down control channel (ePDCCH) method, this method is by making full use of the blank resource particle in ePDCCH, in blank resource particle It is middle to increase new signaling, reduce terminal equipment side and carry out the number of blind Detecting, so that the operation for reducing terminal equipment side is multiple Miscellaneous degree.

According to one embodiment of present invention, the base station of configuration enhancing Physical Downlink Control Channel ePDCCH a kind of is provided Equipment, including：Blank resource particle determines part, for the system configuration information according to communication system, determines Physical Resource Block To blank resource particle not used in PRB-pair；EPDCCH position indication information determines part, for according to the communication System configuration information, Terminal Equipment Identifier symbol information and the channel quality information of system, determine that being used to indicate the ePDCCH exists The ePDCCH position indication information of position in terminal device search space；And bearing part, being used for will be ePDCCH described It sets instruction information and is carried to the blank resource particle to obtain the signaling comprising carrying the ePDCCH position indication information Subframe, and send terminal device for the subframe.

According to above-mentioned base station equipment, wherein the ePDCCH position indication information includes the terminal device search space The degree of polymerization, and according to the degree of polymerization of the terminal device search space and the Terminal Equipment Identifier symbol information determine described in Initial position of the ePDCCH in the terminal device search space.

According to above-mentioned base station equipment, wherein the degree of polymerization is increasing of the Physical Resource Block to including in PRB-pair The integral multiple of the number of strong control channel unit eCCE.

According to above-mentioned base station equipment, wherein the ePDCCH position indication information further includes the ePDCCH at the end Offset in end equipment search space.

According to above-mentioned base station equipment, wherein the bearing part is according to the number of the blank resource particle, using concentration The signaling is intensively placed into one or more continuous resource blocks in PRB-pair, or using distribution by mapping mode The signaling is placed into multiple resource blocks in PRB-pair with being distributed by mapping mode.

According to above-mentioned base station equipment, wherein the bearing part is according to the number of the blank resource particle, to the letter Enable the bits of encoded for using different length.

According to above-mentioned base station equipment, wherein the bearing part accords with information according to the Terminal Equipment Identifier, according to following Any in mapping mode maps PRB-pair the terminal device and the resource block：One terminal device pair Answer a resource block to PRB-pair, a terminal device corresponds to multiple resource blocks to PRB-pair, and multiple terminal devices are corresponding One resource block corresponds to multiple resource blocks to PRB-pair to PRB-pair or multiple terminal devices.

According to above-mentioned base station equipment, wherein when same resource block is to multiple terminal devices are mapped in PRB-pair, adopt It is scrambled with Terminal Equipment Identifier symbol information to be set in the same resource block to differentiation different terminals in PRB-pair Standby ePDCCH position indication information.

According to above-mentioned base station equipment, wherein the system configuration information of the communication system includes：Physical Downlink Control Channel The OFDM symbol number of PDCCH carrying and the port number of public reference signal.

According to another embodiment of the present invention, the side of configuration enhancing Physical Downlink Control Channel ePDCCH a kind of is provided Method, including：According to the system configuration information of communication system, determine Physical Resource Block to blank resource not used in PRB-pair Particle；It is used for according to the system configuration information of the communication system, Terminal Equipment Identifier symbol information and channel quality information, determination Indicate the ePDCCH position indication information of position of the ePDCCH in terminal device search space；And by the ePDCCH Position indication information is carried to the blank resource particle to obtain the letter comprising carrying the ePDCCH position indication information The subframe of order, and terminal device is sent by the subframe.

According to the method for above-mentioned configuration ePDCCH, wherein the ePDCCH position indication information includes the terminal device The degree of polymerization of search space, and information is accorded with according to the degree of polymerization of the terminal device search space and the Terminal Equipment Identifier Determine initial position of the ePDCCH in the terminal device search space.

According to the method for above-mentioned configuration ePDCCH, wherein the degree of polymerization is the Physical Resource Block in PRB-pair The integral multiple of the number for the enhancing control channel unit eCCE for including.

According to the method for above-mentioned configuration ePDCCH, wherein the ePDCCH position indication information further includes the ePDCCH Offset in the terminal device search space.

According to the method for above-mentioned configuration ePDCCH, wherein according to the number of the blank resource particle the step of carrying Mesh, using concentrating mapping mode that the signaling is intensively placed into one or more continuous resource blocks in PRB-pair, Or the signaling is placed into in PRB-pair with being distributed by multiple resource blocks using distribution map mode.

According to the method for above-mentioned configuration ePDCCH, wherein according to the number of the blank resource particle the step of carrying Mesh uses the bits of encoded of different length to the signaling.

According to the method for above-mentioned configuration ePDCCH, wherein accorded with the step of the carrying and being believed according to the Terminal Equipment Identifier Breath maps PRB-pair the terminal device and the resource block according to any in following mapping mode：One For the corresponding resource block of a terminal device to PRB-pair, a terminal device corresponds to multiple resource blocks to PRB-pair, multiple The corresponding resource block of terminal device corresponds to multiple resource blocks to PRB-pair to PRB-pair or multiple terminal devices.

According to the method for above-mentioned configuration ePDCCH, wherein when same resource block is to being mapped with multiple terminals in PRB-pair When equipment, use Terminal Equipment Identifier symbol information to be scrambled in the same resource block to being distinguished not in PRB-pair With the ePDCCH position indication information of terminal device.

According to the method for above-mentioned configuration ePDCCH, wherein the system configuration information of the communication system includes：Physical down The OFDM symbol number of control channel PDCCH carrying and the port number of public reference signal.

According to still another embodiment of the invention, the terminal of detection enhancing Physical Downlink Control Channel ePDCCH a kind of is provided Equipment, including：Demodulation part, for receiving the son of the signaling comprising carrying ePDCCH position indication information from base station equipment Frame, and demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position indication information It is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position indication information Signaling be based on the ePDCCH position indication information is carried to Physical Resource Block to blank not used in PRB-pair What resource particle obtained；And detection part is searched according to the ePDCCH position indication information that demodulation obtains in the terminal device The ePDCCH is detected in rope space.

According to above-mentioned terminal device, wherein the ePDCCH position indication information includes the terminal device search space The degree of polymerization, and according to the degree of polymerization of the terminal device search space and Terminal Equipment Identifier symbol information determine described in Initial position of the ePDCCH in the terminal device search space.

According to above-mentioned terminal device, wherein the degree of polymerization is increasing of the Physical Resource Block to including in PRB-pair The integral multiple of the number of strong control channel unit eCCE.

According to above-mentioned terminal device, wherein the ePDCCH position indication information further includes the ePDCCH at the end Offset in end equipment search space.

According to above-mentioned terminal device, wherein the demodulation part according to Terminal Equipment Identifier accord with information, determine described in The resource block that ePDCCH position indication information is placed on is to PRB-pair.

According to above-mentioned terminal device, wherein when same resource block is to there are multiple terminal devices in PRB-pair When ePDCCH position indication information, is descrambled using Terminal Equipment Identifier symbol information and carry out CRC check, described Same resource block is to the ePDCCH position indication information for distinguishing different terminal equipment in PRB-pair.

Another embodiment according to the present invention provides the side of detection enhancing Physical Downlink Control Channel ePDCCH a kind of Method, including：The subframe of the signaling comprising carrying ePDCCH position indication information is received from base station equipment, and from the subframe Middle demodulation obtains the ePDCCH position indication information, wherein the ePDCCH position indication information is used to indicate described Position of the ePDCCH in terminal device search space, and the signaling for carrying the ePDCCH position indication information is to be based on The ePDCCH position indication information is carried to Physical Resource Block to obtain blank resource particle not used in PRB-pair 's；And the ePDCCH position indication information obtained according to demodulation, in the terminal device search space described in detection ePDCCH。

According to the method for above-mentioned detection ePDCCH, wherein the ePDCCH position indication information includes the terminal device The degree of polymerization of search space, and information is accorded with according to the degree of polymerization and Terminal Equipment Identifier of the terminal device search space and is determined Initial position of the ePDCCH in the terminal device search space.

According to the method for above-mentioned detection ePDCCH, wherein the degree of polymerization is the Physical Resource Block in PRB-pair The integral multiple of the number for the enhancing control channel unit eCCE for including.

According to the method for above-mentioned detection ePDCCH, wherein the ePDCCH position indication information further includes the ePDCCH Offset in the terminal device search space.

According to the method for above-mentioned detection ePDCCH, wherein the step of demodulation further includes：It is accorded with according to Terminal Equipment Identifier Information determines resource block that the ePDCCH position indication information is placed on to PRB-pair.

According to the method for above-mentioned detection ePDCCH, wherein when same resource block is to there are multiple terminals to set in PRB-pair When standby ePDCCH position indication information, descrambled and carried out CRC check using Terminal Equipment Identifier symbol information, with The same resource block is to the ePDCCH position indication information for distinguishing different terminal equipment in PRB-pair.

According to still another embodiment of the invention, a kind of wireless communication system is provided, including：Base station equipment comprising：It is empty White resource particle determines part, for the system configuration information according to communication system, determines Physical Resource Block in PRB-pair Not used blank resource particle；EPDCCH position indication information determines part, for being matched according to the system of the communication system Confidence breath, Terminal Equipment Identifier symbol information and channel quality information determine that be used to indicate the ePDCCH searches in terminal device The ePDCCH position indication information of position in space；And bearing part, for the ePDCCH position indication information to be held The blank resource particle is downloaded to obtain the subframe of the signaling comprising carrying the ePDCCH position indication information, and will The subframe is sent to terminal device and terminal device comprising：Demodulation part is wrapped for receiving from the base station equipment Subframe containing the signaling for carrying ePDCCH position indication information, and demodulation obtains the position ePDCCH from the subframe Indicate information, wherein the ePDCCH position indication information is used to indicate the ePDCCH in terminal device search space Position, and the signaling for carrying the ePDCCH position indication information is to be based on carrying the ePDCCH position indication information Blank resource particle not used in PRB-pair is obtained to Physical Resource Block；And detection part, it is obtained according to demodulation EPDCCH position indication information, detect the ePDCCH in the terminal device search space.

Another embodiment according to the present invention discloses a kind of computer storage medium including computer-readable instruction, meter Calculation machine is instructed for executing computer：According to the system configuration information of communication system, determine Physical Resource Block to PRB-pair In not used blank resource particle；According to the system configuration information of the communication system, Terminal Equipment Identifier symbol information and letter Road quality information determines the ePDCCH position instruction letter for being used to indicate position of the ePDCCH in terminal device search space Breath；And that the ePDCCH position indication information is carried to the blank resource particle is described comprising carrying to obtain The subframe of the signaling of ePDCCH position indication information, and terminal device is sent by the subframe.

According to still another embodiment of the invention, a kind of computer storage medium including computer-readable instruction is disclosed, is counted Calculation machine is instructed for executing computer：The son of the signaling comprising carrying ePDCCH position indication information is received from base station equipment Frame, and demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position indication information It is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position indication information Signaling be based on the ePDCCH position indication information is carried to Physical Resource Block to blank not used in PRB-pair What resource particle obtained；And the ePDCCH position indication information obtained according to demodulation, in the terminal device search space Detect the ePDCCH.

Using the present invention, it is possible to reduce terminal equipment side carries out the number of blind Detecting, to reduce the fortune of terminal equipment side Calculate complexity.

Detailed description of the invention

Below with reference to the accompanying drawings illustrate embodiments of the invention, the invention will be more easily understood it is above and its Its objects, features and advantages.In the accompanying drawings, identical or corresponding technical characteristic or component will use identical or corresponding attached drawing Label is to indicate.

Fig. 1 is the schematic diagram for showing the search space of terminal device；

Fig. 2 is the block diagram for showing the base station equipment of configuration ePDCCH according to an embodiment of the present invention；

Fig. 3 is the schematic diagram shown using additional signaling carrying ePDCCH position indication information；

Fig. 4 A is the schematic diagram of the concentration mapping mode for the additional signaling for showing carrying ePDCCH position indication information；

Fig. 4 B is the schematic diagram for showing the distribution map mode of additional signaling of carrying ePDCCH position indication information；

Fig. 5 is the schematic diagram shown to terminal device and resource block to the PRB-pair mapping mode mapped；

Fig. 6 is to show the schematic diagram that additional signaling is placed in the blank resource particle in a PRB-pair；

Fig. 7 is the coding for the additional signaling for showing carrying ePDCCH position indication information and the schematic diagram of mapping process；

Fig. 8 is the flow chart for showing the method for configuration ePDCCH according to an embodiment of the present invention；

Fig. 9 is the block diagram for showing the terminal device of detection ePDCCH according to an embodiment of the present invention；

Figure 10 is the flow chart for showing the method for detection ePDCCH according to an embodiment of the present invention；And

Figure 11 is the block diagram for showing communication system according to an embodiment of the present invention.

Specific embodiment

Embodiments of the present invention will be described below with reference to the accompanying drawings.It should be noted that for purposes of clarity, in attached drawing and explanation The expression and description of component unrelated to the invention, known to persons of ordinary skill in the art and processing is omitted.

As described above, terminal device needs to carry out blind examination in entire search space to obtain the placement location of PDCCH It surveys.If it is possible to reduce the complexity of the search space of terminal device, then it can reduce terminal equipment side and carry out blind Detecting Number, to reduce the computational complexity of terminal equipment side.Illustrate the search space of terminal device referring now to Fig. 1. Fig. 1 is the schematic diagram for showing the search space of terminal device.

One search space is in given degree of polymerization grade by several control channel units (Control Channel Element, CCE) a series of optional control channel set for constituting, terminal device should attempt to be decoded these set. Degree of polymerization grade refers to the number that DCI information compound flow technology is sent, the i.e. number for the CCE for including in a PDCCH.In PDCCH, Corresponding to 1,2,4,8 this four different degree of polymerization grades, there may be multiple search spaces for a terminal device.In every height In frame, terminal device trial is decoded all possible control channel format being made of in each search space CCE, such as Fruit CRC check success, then it is assumed that the content of control channel is effective to the terminal device, and the terminal device will handle phase It closes information (such as dispatching distribution, scheduling request etc.).

As shown in Figure 1, showing two terminal devices：Terminal device 1 and terminal device 2, and terminal device 1 and terminal The search space of each terminal device in equipment 2 includes terminal device dedicated search space and public search space.In Fig. 1 In, every a line represents a PDCCH, and each square in every a line represents a CCE in PDCCH.As shown in Figure 1, at end In the first row of end equipment 1, every 8 CCE constitute a control channel set, gather so the first row of terminal device 1 corresponds to Right grade 8.Similarly, in the second row of terminal device 1, every 4 CCE constitute a control channel set, so terminal Second row of equipment 1 corresponds to degree of polymerization class 4；In the third line of terminal device 1, every 2 CCE constitute a control channel Set, so the third line of terminal device 1 corresponds to degree of polymerization grade 2；And in the fourth line of terminal device 1,1 CCE A control channel set is constituted, so the fourth line of terminal device 1 corresponds to degree of polymerization grade 1.Similarly, terminal device 2 The first row to fourth line correspond respectively to degree of polymerization grade 8,4,2 and 1.

Each down control channel can support multiple formats, and these formats are unknown in advance for terminal device 's.Therefore, terminal device needs to carry out blind examination to the format of down control channel.Although the description for CCE structure, facilitates The number for reducing blind examination, however, there remains the quantity that certain mechanism carrys out the CCE set that limiting terminal equipment needs to monitor.It is aobvious So, for the angle of scheduling, the flexibility of scheduling may be influenced whether to the limitation of CCE set, and is needed in transmitting terminal Carry out extra process.In addition, from the point of view of terminal device complexity, the case where for biggish bandwidth of cell, do not wish It hopes and monitors all possible CCE set.Therefore, search space will propose limitation as few as possible to scheduler, while limit end The maximum times of blind examination at end equipment.

When, there are when enough CCE, the search space of each terminal device will be different, each terminal in system in system Equipment has a terminal device dedicated search space in each degree of polymerization rank.In some cases it is necessary to address A group in system or whole terminal devices, for example, the scheduling of system information, the transmission of paging information, power control command biography It is defeated etc., therefore public search space is that all terminal devices are general, all terminal devices controlled in information cells require to supervise Listen the CCE in public search space.As shown in Figure 1, the terminal device dedicated search space in terminal device 1 and terminal device 2 It is different, and it is possible to it is partially overlapping, but since terminal device dedicated search space is changed with subframe, institute It greatly may be very no longer overlapping with the part overlapped in next subframe.Table 1 describes the monitoring situation of DCI.Wherein, public to search Rope space just for degree of polymerization grade be 4 and 8 CCE and minimum DCI format (such as 0/1A/3/3A and 1C) and defining.

Table 1：The DCI format that terminal device is monitored in different search spaces

Illustrate the base station equipment of configuration ePDCCH according to an embodiment of the present invention below with reference to Fig. 2.Referring to fig. 2, Fig. 2 is to show The block diagram of the base station equipment of configuration ePDCCH according to an embodiment of the present invention is shown out.Base station equipment 200 includes blank resource grains Son determines that part 202, ePDCCH position indication information determine part 204 and bearing part 206.

Blank resource particle determines that part 202 for the system configuration information according to communication system, determines Physical Resource Block To blank resource particle not used in PRB-pair.

For example, the system configuration information of communication system can be the OFDM symbol number of PDCCH carrying.In another example communication The system configuration information of system can be the port number of public reference signal.Specifically, for example, base station equipment can be from physics control Format indication channel (Physical Control Format Indication Channel, PCFICH) processed obtains PDCCH and holds The OFDM symbol number of load.In addition, for example, base station equipment can obtain the port number of public reference signal from high-level signaling.This Field is it will be appreciated by the skilled person that the system configuration information of communication system is not limited to the OFDM symbol number of above-mentioned PDCCH carrying Or the port number of public reference signal, it can also be other system configuration informations as known in the art.

Each of according to the system configuration information of the communication system of acquisition, base station equipment can determine under the system configuration Physical Resource Block in PRB-pair for the number of the ePDCCH resource particle used.Specifically, for example, according to acquisition PDCCH carrying OFDM symbol number and public reference signal port number, base station equipment can by following table 2 determine with The corresponding each Physical Resource Block of port number of the OFDM symbol number and public reference signal of PDCCH carrying is in PRB-pair For the number of the ePDCCH resource particle used.

Table 2：The resource particle number that each Physical Resource Block centering under different system configurations uses for ePDCCH

In above-mentioned table 2, (enhanced Control Channel Element enhances control channel list to each eCCE Member) in include 36 resource particles, and the port number of demodulated reference signal DMRS be 4.As shown in table 2, for example, if The OFDM symbol number of PDCCH carrying is 1 and the port number of public reference signal is 4, then each physics money under the configuration Source block in PRB-pair for the number of the ePDCCH resource particle used be 112.In another example if PDCCH carrying OFDM symbol number is 3 and the port number of public reference signal is 2, then each Physical Resource Block under the configuration is to PRB- In pair for the number of the ePDCCH resource particle used be 96.For another example if the OFDM symbol number of PDCCH carrying is 3 and public reference signal port number be 1, then each Physical Resource Block under the configuration in PRB-pair for ePDCCH The number of the resource particle used is 102.It will be appreciated by those skilled in the art that above-mentioned table 2 be only it is illustrative, according to reality Border situation can have different values, such as in the case where the port number of demodulated reference signal DMRS is 2, in above-mentioned table 2 Numerical value will have corresponding variation.In addition, it will be appreciated by those skilled in the art that above-mentioned table 2 can be according to the difference of system configuration And there is corresponding variation.

In addition, base station equipment can also be determined in the system configuration according to the system configuration information of the communication system of acquisition Under each physical resource to the number of the blank resource particle in PRB-pair.Physical resource provides the blank in PRB-pair Source particle refers to physical resource to the resource particle not yet occupied by other signalings, data or pilot tone in PRB-pair.Specifically Ground, for example, base station equipment can be with according to the port number of the OFDM symbol number of the PDCCH of acquisition carrying and public reference signal Each object corresponding with the port number of OFDM symbol number and public reference signal that PDCCH is carried is determined by following table 3 Resource is managed to the number of the blank resource particle in PRB-pair.

Table 3：The blank resource particle number of each Physical Resource Block centering under different system configurations

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 3 4.As shown in table 3, for example, if the OFDM symbol number of PDCCH carrying is 1 and the port number of public reference signal is 4, According to above-mentioned table 2, each Physical Resource Block under the configuration is to the resource particle number used in PRB-pair for ePDCCH It is 112, due to including 36 resource particles in eCCE each in this example, so the physical resource under the configuration is to PRB-pair Most multipotency carries 3 eCCE, then the number of remaining blank resource particle is (112-36 × 3)=4.In another example if PDCCH The OFDM symbol number of carrying is 3 and the port number of public reference signal is 2, then according to above-mentioned table 2, each of under the configuration Physical Resource Block is 96 to the resource particle number used in PRB-pair for ePDCCH, due in eCCE each in this example Including 36 resource particles, so physical resource under the configuration carries 2 eCCE to PRB-pair most multipotency, then remaining sky The number of white resource particle is (96-36 × 2)=24.For another example if the OFDM symbol number of PDCCH carrying is 3 and public affairs The port number of reference signal is 1 altogether, then according to above-mentioned table 2, each Physical Resource Block under the configuration in PRB-pair for The resource particle number that ePDCCH is used is 102, due to including 36 resource particles in eCCE each in this example, under the configuration Physical resource to PRB-pair most multipotency carry 2 eCCE, then the number of remaining blank resource particle be (102-36 × 2)=30.It will be appreciated by those skilled in the art that above-mentioned table 3 be only it is illustrative, can have difference according to the actual situation Value.Such as when number of the Physical Resource Block to the eCCE carried in PRB-pair is fixed as some in 3GPP subsequent standards Numerical value, either the number of resource particle included in each eCCE be fixed as other numerical value other than 36 or according to certain surely When then using the numerical value of dynamic change, then the number of remaining blank resource particle will have corresponding variation under every kind of configuration. In addition, it is necessary to explanation, those skilled in the art should can be made accordingly above-mentioned table 3 under spirit disclosed by the invention Change.

EPDCCH position indication information determines part 204 for system configuration information, the terminal according to the communication system Device identifier information and channel quality information, determination are used to indicate position of the ePDCCH in terminal device search space EPDCCH position indication information.

As described above, for example, the system configuration information of communication system can be PDCCH carrying OFDM symbol number or The port number of public reference signal.In one embodiment of the invention, the number of the eCCE of each Physical Resource Block centering is It can be set dynamically.For example, base station equipment can be determined in the system according to the system configuration information of the communication system of acquisition Each Physical Resource Block under configuration is to the number of the eCCE in PRB-pair.Specifically, for example, the PDCCH according to acquisition is held The OFDM symbol number of load and the port number of public reference signal, base station equipment can be determined by following table 4 and be held with PDCCH The OFDM symbol number of load and the corresponding each Physical Resource Block of the port number of public reference signal are to the eCCE in PRB-pair Number.

Table 4：ECCE number of each Physical Resource Block centering under different system configurations

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 4 4.As shown in table 4, for example, if the OFDM symbol number of PDCCH carrying is 1 and the port number of public reference signal is 4, According to above-mentioned table 2, each Physical Resource Block under the configuration is to the resource particle number used in PRB-pair for ePDCCH It is 112, due to including 36 resource particles in eCCE each in this example, so the physical resource under the configuration is to PRB-pair The number of the eCCE of most multipotency carrying is 3, so that the number of remaining blank resource particle is few as far as possible.In another example if The OFDM symbol number of PDCCH carrying is 3 and the port number of public reference signal is 2, then according to above-mentioned table 2, under the configuration Each Physical Resource Block be 96 to the resource particle number used in PRB-pair for ePDCCH, due to each in this example It include 36 resource particles in eCCE, so the number for the eCCE that the physical resource under the configuration carries PRB-pair most multipotency It is 2, so that the number of remaining blank resource particle is few as far as possible.For another example if the OFDM symbol number of PDCCH carrying is 3 and public reference signal port number be 1, then according to above-mentioned table 2, each Physical Resource Block under the configuration is to PRB-pair In the resource particle number that uses for ePDCCH be 102, due to including 36 resource particles, institute in eCCE each in this example The number of the eCCE carried with the physical resource under the configuration to PRB-pair most multipotency is 2, so that remaining blank resource The number of particle is few as far as possible.It will be appreciated by those skilled in the art that above-mentioned table 4 be only it is illustrative, according to the actual situation may be used With different values.In addition, it is necessary to explanation, those skilled in the art should can it is disclosed by the invention spirit under it is right Above-mentioned table 4 makes corresponding change.

Present inventor is in view of number meeting of the Physical Resource Block to the eCCE in PRB pair in above-mentioned example It changes, so the set of the degree of polymerization should also be changed accordingly in each subframe.Generally, in the set of the degree of polymerization Each degree of polymerization can be Physical Resource Block to the whole of the number of the enhancing control channel unit eCCE for including in PRB-pair Multiple, to be suitble to terminal device UE to carry out reasonable blind Detecting and further decode.In base station equipment according to the communication system of acquisition The system configuration information of system has determined each Physical Resource Block under the system configuration to the number of the eCCE in PRB-pair Later, base station equipment can obtain the number of the eCCE in PRB-pair according to identified each Physical Resource Block corresponding Degree of polymerization set.Specifically, for example, number according to identified each Physical Resource Block to the eCCE in PRB-pair, base Station equipment can obtain corresponding degree of polymerization set by following table 5.

Table 5：Degree of polymerization set corresponding from different eCCE numbers

ECCE/ Physical Resource Block pair	2	3	4
				Corresponding degree of polymerization set	{1,2,4,8}	{1,3,6,9}	{1,4,8,12}

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 5 4.Then above example is wrapped in each eCCE number/Physical Resource Block pair correspondence degree of polymerization set as shown in table 5 The degree of polymerization contained is integral multiple of the Physical Resource Block to the number for the eCCE for including in PRB-pair, to be suitble to terminal device UE carries out reasonable blind Detecting and further decodes.For example, if identified each Physical Resource Block is in PRB-pair The number of eCCE is 3, and (such as the OFDM symbol number corresponding to PDCCH carrying is 1 and the port number of public reference signal is 4 System configuration), then the corresponding degree of polymerization collection under the configuration is combined into { 1,3,6,9 }.In another example if identified each object Reason resource block to the number of the eCCE in PRB-pair be 2 (such as corresponding to the PDCCH OFDM symbol number carried be 3 and The system configuration that the port number of public reference signal is 2), then the corresponding degree of polymerization collection under the configuration is combined into { 1,2,4,8 }.Again For example, if each Physical Resource Block is 4 to the number of the eCCE in PRB-pair, the corresponding degree of polymerization collection under the configuration It is combined into { 1,4,8,12 }.It will be appreciated by those skilled in the art that above-mentioned table 5 be only it is illustrative, according to the actual situation can be with With different values.In addition, it is necessary to explanation, those skilled in the art should can it is disclosed by the invention spirit under to upper It states table 5 and makes corresponding change.

According to a preferred embodiment of the present invention, for example, ePDCCH position indication information includes that terminal device search is empty Between the degree of polymerization, and according to the degree of polymerization and Terminal Equipment Identifier of terminal device search space accord with information determine ePDCCH in institute State the initial position in terminal device search space.

As described above, base station equipment can obtain corresponding degree of polymerization set according to the system configuration information of communication system. After obtaining corresponding degree of polymerization set, base station equipment can be determined from corresponding degree of polymerization set according to certain condition The degree of polymerization of terminal device search space.Specifically, for example, base station equipment can be according to being measured by terminal device and feed back to base The channel quality information of station equipment determines the degree of polymerization of terminal device search space from corresponding degree of polymerization set.If channel Quality is poorer, then the identified degree of polymerization is also correspondingly higher；If channel quality is better, the identified degree of polymerization is also corresponding Ground is lower.In another example base station equipment can determine terminal device according to the classification of control signaling from corresponding degree of polymerization set The degree of polymerization of search space.If the different degree of control signaling is higher, the identified degree of polymerization is also correspondingly higher；If control The different degree of signaling processed is lower, then the identified degree of polymerization is also correspondingly lower.It will be appreciated by those skilled in the art that base station is set It is standby can also basis measured by terminal device and fed back to the group of the channel quality information of base station equipment and the classification of control signaling Close the degree of polymerization that terminal device search space is determined from corresponding degree of polymerization set.In addition, those skilled in the art should manage Solution, the classification of above-mentioned channel information and control signaling be only it is illustrative, base station equipment can also be according to other conditions from right The degree of polymerization of terminal device search space is determined in the degree of polymerization set answered.

Then above example, for example, if the OFDM symbol number in PDCCH carrying is 1 and public reference signal Port number be 4 system configuration under determine corresponding degree of polymerization collection be combined into { 1,3,6,9 }, then base station equipment can be according to by end End equipment measures and feeds back to the channel quality information of base station equipment and/or the classification of control signaling from corresponding degree of polymerization set { 1,3,6,9 } degree of polymerization that terminal device search space is determined in is 3.In another example if the OFDM symbol in PDCCH carrying is a Number for 3 and public reference signal port numbers be 2 system configuration under determine corresponding degree of polymerization collection be combined into 1,2,4, 8 }, then base station equipment can be according to the channel quality information and/or control signaling for being measured by terminal device and being fed back to base station equipment Classification from corresponding degree of polymerization set { 1,2,4,8 } determine terminal device search space the degree of polymerization be 4.

In another embodiment of the invention, the corresponding degree of polymerization set under each configuration is fixed, for example, 1, 2,4,8 }, those skilled in the art will be seen that, base station equipment need not be again specially according to the system configuration of communication system Information obtains corresponding degree of polymerization set, but base station equipment can utilize above-mentioned side directly according to scheduled degree of polymerization set Formula determines the degree of polymerization of terminal device search space from scheduled degree of polymerization set.

After the degree of polymerization that terminal device search space has been determined, base station equipment can be according to terminal device search space The degree of polymerization and Terminal Equipment Identifier symbol information determine initial position of the ePDCCH in the terminal device search space.Terminal Device identifier information for example can be the network temporary code RNTI of terminal device.On it will be appreciated by those skilled in the art that State the network temporary code RNTI of terminal device be only it is illustrative, can also using terminal device other information as terminal Device identifier information.In addition, the calculation method about search space initial position, it can be with reference to the agreement TS in PDCCH About the formula and content for calculating search space initial position in 36.213 9.1.1 section, detail is no longer superfluous herein It states.

Another preferred embodiment according to the present invention, for example, ePDCCH position indication information further includes ePDCCH in terminal Offset in equipment search space.

Specifically, base station equipment can be in terminal device search space, according to resource utilization, in position EPDCCH is placed at place, it is possible thereby to determine offset of the ePDCCH in terminal device search space.For example, as shown in Fig. 2, Offset of the ePDCCH in terminal device search space is 2.

Bearing part 206 is used to the ePDCCH position indication information being carried to the blank resource particle to be wrapped Subframe containing the additional signaling for carrying the ePDCCH position indication information, and terminal device is sent by the subframe.

As described above, ePDCCH position indication information may include that the degree of polymerization of terminal device search space and ePDCCH exist Offset in terminal device search space.Therefore, the ePDCCH position indication information is carried to the blank resource grains Son can specifically include with the subframe for obtaining the additional signaling comprising carrying the ePDCCH position indication information：Terminal is set Offset of the degree of polymerization, and/or ePDCCH of standby search space in terminal device search space is carried to the blank resource Particle is to obtain the subframe of the additional signaling comprising carrying the degree of polymerization and/or offset.

As shown in figure 3, the position indication information of ePDCCH-UE_1 has been mapped in PRB-pair-B.For example, PRB- Additional signaling (being indicated with black dot) in pair-B can indicate the degree of polymerization of the ePDCCH-UE_1 in PRB-pair-A (such as the degree of polymerization is 3 in Fig. 3).In addition, the additional signaling in PRB-pair-B also can indicate that ePDCCH-UE_1 is being searched for Offset (such as offset is 2 in Fig. 3) in space.

In order to which ePDCCH position indication information is carried to blank resource particle to obtain comprising carrying the position ePDCCH It indicates the subframe of the additional signaling of information, coding appropriate can be carried out to ePDCCH position indication information.For example, can use Dibit encoding mode encodes ePDCCH position indication information.It will be appreciated by those skilled in the art that dibit encoding Mode be only it is illustrative, ePDCCH position indication information can also be encoded using other coding modes appropriate.Separately Outside, because the number of the blank resource particle in a PRB-pair is different according to the difference of system configuration, i.e., for additional The number for instructing the blank resource particle used is also variation.Therefore, the size (i.e. coding mode) of additional signaling is according to sky The difference of the number of white resource particle and occur to change accordingly.

Specifically, such as two can be carried out to the degree of polymerization for including in ePDCCH position indication information using following table 6 Bits of encoded.

Table 6：The dibit encoding table of the degree of polymerization

ECCE/ Physical Resource Block pair	2	3	4
				Corresponding degree of polymerization set	{1,2,4,8}	{1,3,6,9}	{1,4,8,12}
Corresponding degree of polymerization coding	{00,01,10,11}	{00,01,10,11}	{00,01,10,11}

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 6 4.As shown in table 6, for example, then its corresponding degree of polymerization is encoded to if the degree of polymerization is 3 in degree of polymerization set { 1,3,6,9 } 01.It will be appreciated by those skilled in the art that above-mentioned table 6 be only it is illustrative, can have different values according to the actual situation. In addition, it will be appreciated by those skilled in the art that above-mentioned table 6 can be predefined according to existing knowledge.

In addition, can for example be set to the ePDCCH for including in ePDCCH position indication information in terminal using following table 7 Offset in standby search space carries out dibit encoding.

Table 7：The dibit encoding table of offset of the ePDCCH in terminal device search space

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 7 4.As shown in table 7, for example, corresponding offset is compiled if offset of the ePDCCH in terminal device search space is 2 Code is 10.It will be appreciated by those skilled in the art that above-mentioned table 7 be only it is illustrative, can have difference according to the actual situation Value.In addition, it will be appreciated by those skilled in the art that above-mentioned table 7 can be predefined according to existing knowledge.

It is possible in accordance with a preferred embodiment of the present invention to according to the number of blank resource particle, to additional signaling using different The bits of encoded of length.

It specifically, can be in order to make the ePDCCH position indication information carried in additional signaling that there is stronger robustness The bits of encoded for using different length to additional signaling according to the number of blank resource particle, thus will be to ePDCCH position instruction The bit expanded that information is encoded is more multidigit bit.For example, it is assumed that including in ePDCCH position indication information The bit that the degree of polymerization obtains after being encoded is 2 bits, and carries out to the offset for including in ePDCCH position indication information The bit obtained after coding is 2 bits, i.e., the bit obtained after encoding to ePDCCH position indication information is 4 bits, then The bit of 16 bits, 24 bits, 32 bits or other bit numbers can be used to additional signaling according to following table 8 or table 9 Coding, so that 4 bit expandeds obtained after encoding to ePDCCH position indication information are more multidigit bit.With this side The robustness that data are transmitted in the channel can be improved in formula.Generally, the number of bits of extension is more, and robustness is stronger, but provides Source occupancy is also bigger.In view of the number of the remaining blank resource particle of Physical Resource Block centering each in the present invention can occur Variation, so the extended mode that can be changed in the present invention using coded-bit digit.Specifically, table 8 is using concentration mapping mode EPDCCH position indication information is extended and is mapped to the table that illustrates of the blank resource particle in PRB-pair, and table 9 is to use What ePDCCH position indication information was extended and be mapped to the blank resource particle in PRB-pair by distribution map mode illustrates table. It will be described in concentrating mapping mode and distribution map mode later.

Table 8

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 8 4.It will be appreciated by those skilled in the art that above-mentioned table 8 be only it is illustrative, can have different values according to the actual situation. In addition, it will be appreciated by those skilled in the art that above-mentioned table 8 can be predefined according to existing knowledge.

Table 9

It include 36 resource particles in each eCCE, and the port number of demodulated reference signal DMRS is in above-mentioned table 9 4.It will be appreciated by those skilled in the art that above-mentioned table 9 be only it is illustrative, can have different values according to the actual situation. In addition, it will be appreciated by those skilled in the art that above-mentioned table 9 can be predefined according to existing knowledge.

It is possible in accordance with a preferred embodiment of the present invention to according to the number of the blank resource particle, using concentration mapping side Additional signaling is intensively placed into one or more continuous resource blocks in PRB-pair by formula, or uses distribution map side Additional signaling is placed into multiple resource blocks in PRB-pair with being distributed by formula.

Illustrate the concentration mapping side for carrying the additional signaling of ePDCCH position indication information below with reference to Fig. 4 A and table 8 The schematic diagram of formula.Fig. 4 A is the schematic diagram of the concentration mapping mode for the additional signaling for showing carrying ePDCCH position indication information. Table 8 is the blank resource particle for ePDCCH position indication information being extended and being mapped to using concentration mapping mode in PRB-pair Illustrate table.

The feelings of the number of resource particle needed for the number of blank resource particle in PRB-pair is greater than additional signaling Under condition, additional signaling can be intensively placed in a PRB-pair using concentration mapping mode.As shown in table 8, for example, The number of blank resource particle in PRB-pair is 18, and the number of resource particle needed for additional signaling is 16, therefore such as Shown in Fig. 4 A, the additional signaling for carrying ePDCCH-UE_8 position indication information can be placed into one using concentration mapping mode In a PRB-pair-A.It should be noted that concentration mapping mode mentioned here is not an absolute concept, as long as The mapping mode that additional signaling is intensively placed into one or more continuous Physical Resource Block centerings as far as possible can claim To concentrate mapping mode.For example, according to actual needs, ePDCCH position indication information can be extended to more bit as far as possible Digit is to improve robustness.Blank resource grains subnumber can also be set as 16 ratios in table 8 for the extension digit in 4 configuration It is special.In this case the blank RE of a Physical Resource Block pair can only carry 8 bits, then at least need two Physical Resource Block to The ePDCCH position indication information after extension can be carried.In such a case, it is possible to which the additional signaling is placed into continuous two For a resource block in PRB-pair, such mapping mode is relative to the distribution map mode in order to obtain diversity gain Concentrate mapping mode.

Distribution map mode refers to following mapping mode：Even if the number of the blank resource particle in PRB-pair is big In the case where the number of data particle needed for additional signaling, also the additional signaling is split, and is placed with being distributed In different PRB-pair, to obtain frequency diversity gain.As shown in table 9, for example, blank resource particle in PRB-pair Number be 18, and the number of resource particle needed for additional signaling be 16, therefore as shown in Figure 4 B, can be by terminal device 1 Additional signaling be split as 4 parts, and by 4 parts after fractionation be placed individually into PRB-pair-A, PRB-pair-B, In this 4 PRB-pair of PRB-pair-C and PRB-pair-D.It similarly, can also be by the attached of terminal device 2 to terminal device 4 Add signaling to be split as 4 parts respectively, and by 4 parts after fractionation be also placed individually into PRB-pair-A, PRB-pair-B, In this 4 PRB-pair of PRB-pair-C and PRB-pair-D.Therefore, in a PRB-pair will carrying terminal device 1 to A part in the additional signaling of terminal device 4.In table 9, defining at most allows to carry 4 terminals in a signaling space The ePDCCH position indication information additional signaling of equipment, therefore terminal device at most only needs to detect 4 times.Although distributed mapping It has been slightly increased complexity, but has been that of obtaining frequency diversity gain.

Preferred embodiment in accordance with the present invention accords with information according to Terminal Equipment Identifier, according to appointing in following mapping mode A kind of pair of terminal device and resource block map PRB-pair：The corresponding resource block of one terminal device is to PRB- Pair, a terminal device correspond to multiple resource blocks to PRB-pair, and the corresponding resource block of multiple terminal devices is to PRB- Pair or multiple terminal devices correspond to multiple resource blocks to PRB-pair.

Illustrate the mapping mode mapped PRB-pair terminal device and resource block below with reference to Fig. 5.Fig. 5 is to show Out to terminal device and resource block to the schematic diagram of the PRB-pair mapping mode mapped.

In the present invention, terminal device and the placement PRB-pair of its ePDCCH position indication information additional signaling are direct Mapping relations only accord with Terminal Equipment Identifier information-related.But allow following four situation occur：1) as shown in Fig. 5 (a), one The corresponding PRB-pair of a terminal device；2) as shown in Fig. 5 (b), a terminal device corresponds to multiple PRB-pair；3) as schemed Shown in 5 (c), the corresponding PRB-pair of multiple terminal devices；And 4) as shown in Fig. 5 (d), multiple UE correspond to multiple PRB- pair。

As shown in table 8, table 9 and Fig. 4 B, if it includes that multiple terminals are set that one, which maps in the obtained space PRB-pair, Standby, then present terminal equipment needs carry out in ePDCCH position instruction signaling space blind Detecting several times and are most terminated Fruit.

About the specific mapping ruler of terminal device to PRB-pair, can flexibly set according to actual needs.For example, false If Terminal Equipment Identifier symbol information is：UE1, UE2, UE3 ...；The number of PRB-pair is PRB1 in ePDCCH signaling space, PRB2, PRB3 ..., then the mapping relations between Terminal Equipment Identifier symbol information and the number value of PRB-pair can such as table 10 or Shown in person's table 11 or table 12.

Table 10：The mapping relations 1 of Terminal Equipment Identifier symbol information and PRB-pair

Table 11：The mapping relations 2 of Terminal Equipment Identifier symbol information and PRB-pair

Table 12：The mapping relations 3 of Terminal Equipment Identifier symbol information and PRB-pair

It will be appreciated by those skilled in the art that above-mentioned table 10 to table 12 be only it is illustrative, according to the actual situation can be with With different values.In addition, it will be appreciated by those skilled in the art that above-mentioned table 10 to table 12 can be true in advance according to existing knowledge It is fixed.

In a PRB-pair, the position for the blank resource particle that additional signaling occupies and the position of eCCE, with simple Easy to operate is basic principle, and base station equipment and terminal device should reach an agreement.For example, as shown in fig. 6, can be by a PRB- Blank resource particle in pair is put together at the foremost of the PRB-pair.In addition, as shown in fig. 6, in PRB-pair, It can be put according to the sequence of first frequency domain (as shown in the trunnion axis in Fig. 6) time domain (as shown in the vertical axis in Fig. 6) afterwards Set additional signaling.

Preferred embodiment in accordance with the present invention, when same resource block is to multiple terminal devices are mapped in PRB-pair, Use Terminal Equipment Identifier symbol information to be scrambled in same resource block to distinguishing different terminal equipment in PRB-pair EPDCCH position indication information.

If in the same signaling space, there are the ePDCCH position indication information additional signaling of multiple terminal devices, Then scrambled between the additional signaling of different terminal equipment by using Terminal Equipment Identifier symbol information to distinguish.In this feelings Under condition, terminal device needs to carry out detection several times to obtain the ePDCCH position indication information additional signaling of oneself.As more than Table 9 shown in, define at most allow in a signaling space carry 4 UE ePDCCH position indication information additional signaling, Therefore the ePDCCH position indication information additional signaling that terminal device at most needs to detect 4 times to obtain oneself.

Illustrate the coding and mapping process that carry the additional signaling of ePDCCH position indication information below with reference to Fig. 7.Fig. 7 It is the coding for the additional signaling for showing carrying ePDCCH position indication information and the schematic diagram of mapping process.

As described above, base station equipment can determine the terminal device under current system configuration according to table 8 or table 9 The carrying of ePDCCH position indication information and mapping mode.Then, as shown in fig. 7, base station equipment can be according to terminal device mark Know symbol information and calculates the position PRB-pair for carrying the ePDCCH position indication information of the terminal device under current system configuration, and By bit after QPSK is modulated, it is placed sequentially in corresponding PRB-pair.

According to the present embodiment, through making full use of to the blank resource particle in ePDCCH, in blank resource particle Increase new signaling, it is possible to reduce terminal equipment side carries out the number of blind Detecting, so that the operation for reducing terminal equipment side is complicated Degree.

Illustrate the method for configuration ePDCCH according to an embodiment of the present invention below with reference to Fig. 8.Fig. 8 is to show according to the present invention The flow chart of the method for the configuration ePDCCH of embodiment.

This method is since step 800.In step 802, according to the system configuration information of communication system, determine that physics provides Source block is to blank resource particle not used in PRB-pair.Then, in step 804, according to the system of the communication system Configuration information, Terminal Equipment Identifier symbol information and channel quality information determine that be used to indicate the ePDCCH searches in terminal device The ePDCCH position indication information of position in rope space.Then, in step 806, by the ePDCCH position indication information The blank resource particle is carried to obtain including the subframe for carrying the additional signaling of the ePDCCH position indication information, And terminal device is sent by the subframe.Finally, this method terminates at step 808.

It is according to an embodiment of the present invention configuration ePDCCH method be and configuration ePDCCH according to an embodiment of the present invention The corresponding method of base station equipment 200, therefore details are not described herein for its detail.

Illustrate the terminal device of detection ePDCCH according to an embodiment of the present invention below with reference to Fig. 9.Fig. 9 is shown according to this The block diagram of the terminal device of the detection ePDCCH of inventive embodiments.As shown in figure 9, the terminal device 900 of detection ePDCCH includes Demodulation part 902 and detection part 904.

It includes the additional signaling for carrying ePDCCH position indication information that demodulation part 902, which is used to receive from base station equipment, Subframe, and demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position instruction letter Breath is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position instruction letter The additional signaling of breath is to be based on for the ePDCCH position indication information being carried to Physical Resource Block to unused in PRB-pair Blank resource particle obtain.

Terminal device receives data from base station equipment.Terminal device passes through demodulation PCFICH (physical control format instruction letter Road) come determine PDCCH occupy OFDM symbol number.In addition, terminal device obtains system public reference signal from high-level signaling Port number and demodulated reference signal DMRS port number, or terminal device only obtains in the case where known DMRS port number Obtain the port number of system public reference signal.

Terminal device determines under current system configuration according to above-mentioned table 3, blank resource particle in a PRB-pair Number.In addition, terminal device obtains the corresponding degree of polymerization set of terminal device itself according to above-mentioned table 5.In addition, terminal device root It is determined under current system configuration according to above-mentioned table 8 or table 9, the mapping mode of ePDCCH position indication information.

It is possible in accordance with a preferred embodiment of the present invention to accord with information according to Terminal Equipment Identifier, ePDCCH position instruction is determined The resource block that information is placed on is to PRB-pair.Specifically, for example, terminal device can pass through above-mentioned table 10, table 11 or table 12, information and current ePDCCH position indication information mapping mode are accorded with according to Terminal Equipment Identifier, obtain current system configuration The position PRB-pair of the ePDCCH position indication information of lower carrying terminal device.

Terminal device is in corresponding PRB-pair, in a certain order, such as when according to after first frequency domain shown in fig. 6 The sequence in domain demodulates the ePDCCH position indication information of terminal device on the position of additional signaling.

Preferred embodiment in accordance with the present invention, ePDCCH position indication information may include the poly- of terminal device search space It is right.Preferred embodiment in accordance with the present invention, ePDCCH position indication information can also include that ePDCCH is searched in terminal device Offset in space.After the ePDCCH position indication information to terminal device demodulates, above-mentioned table 6 and table can be passed through 7 obtain the offset of the degree of polymerization of terminal device and ePDCCH in terminal device search space.

It is possible in accordance with a preferred embodiment of the present invention to according to the degree of polymerization and Terminal Equipment Identifier of terminal device search space Symbol information determines initial position of the ePDCCH in terminal device search space.Calculating side about search space initial position Method can refer in the 9.1.1 section of the agreement TS 36.213 in PDCCH about the formula for calculating search space initial position And content, details are not described herein for detail.After determining the search space ePDCCH initial position, it can combine Offset of the ePDCCH in terminal device search space obtains position of the ePDCCH in terminal device search space.? It, can be according to position of the ePDCCH in terminal device search space to ePDCCH after the position in terminal device search space It sets and the additional signaling of carrying ePDCCH position indication information is demodulated, to obtain ePDCCH position indication information.Ability Field technique personnel should be appreciated that above-mentioned offset is not required, i.e., can also be by originating according only to the search space ePDCCH Position successively to behind initial position possible position carry out blind examination, to carrying ePDCCH position indication information additional signaling into Row demodulation.

Preferred embodiment in accordance with the present invention, when same resource block is to there are multiple terminal devices in PRB-pair When ePDCCH position indication information, CRC check is descrambled and carried out using Terminal Equipment Identifier symbol information, in same resource Block is to the ePDCCH position indication information for distinguishing different terminal equipment in PRB-pair.

Detection part 904 is used for the ePDCCH position indication information obtained according to demodulation, searches in the terminal device empty Between the middle detection ePDCCH.

According to the present embodiment, by terminal device can from the blank resource particle in ePDCCH increased new letter Demodulation obtains ePDCCH position indication information in order, and the ePDCCH position indication information obtained according to demodulation is in terminal device EPDCCH is detected in search space, it is possible to the number that terminal equipment side carries out blind Detecting is reduced, to reduce terminal device The computational complexity of side.

Illustrate the method for detection ePDCCH according to an embodiment of the present invention below with reference to Figure 10.Figure 10 is shown according to this The flow chart of the method for the detection ePDCCH of inventive embodiments.

This method is since step 1000.In step 1002, receives from base station equipment and refer to comprising carrying the position ePDCCH Show the subframe of the additional signaling of information, and demodulation obtains ePDCCH position indication information from subframe, wherein the position ePDCCH Instruction information is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position instruction The additional signaling of information is not made in PRB-pair based on the ePDCCH position indication information is carried to Physical Resource Block Blank resource particle obtains.Then, in step 1004, according to the ePDCCH position indication information that demodulation obtains, at end End equipment detects ePDCCH in search space.This method terminates at step 1006.

It is according to an embodiment of the present invention detection ePDCCH method be and detection ePDCCH according to an embodiment of the present invention The corresponding method of terminal device, therefore details are not described herein for its detail.

Illustrate communication system according to an embodiment of the present invention below with reference to Figure 11.Figure 11 is to show according to embodiments of the present invention Communication system block diagram.

As shown in figure 11, communication system 1100 includes the base station equipment 200 wirelessly communicated with each other and terminal device 900.Base station equipment 200 includes：Blank resource particle determines part 202, for the system configuration information according to communication system, really Physical Resource Block is determined to blank resource particle not used in PRB-pair；EPDCCH position indication information determines part 204, uses In according with information and channel quality information according to the system configuration information of the communication system, Terminal Equipment Identifier, determine for referring to Show the ePDCCH position indication information of position of the ePDCCH in terminal device search space；And bearing part 206, it uses It is ePDCCH described comprising carrying to obtain in the ePDCCH position indication information is carried to the blank resource particle The subframe of the additional signaling of instruction information is set, and sends terminal device for the subframe.Terminal device 900 includes：Demodulation Part 902, for the subframe of the additional signaling from base station equipment reception comprising carrying ePDCCH position indication information, and from Demodulation obtains the ePDCCH position indication information in the subframe, wherein the ePDCCH position indication information is used to indicate Position of the ePDCCH in terminal device search space, and carry the additional letter of the ePDCCH position indication information Order is to be based on the ePDCCH position indication information being carried to Physical Resource Block to blank resource not used in PRB-pair What particle obtained；And detection part 904, the ePDCCH position indication information for being obtained according to demodulation are set in the terminal The ePDCCH is detected in standby search space.

In addition, the technology that the disclosure provides is configurable as follows：

A kind of base station equipment of configuration enhancing Physical Downlink Control Channel ePDCCH of scheme 1., including：

Blank resource particle determines part, for the system configuration information according to communication system, determines Physical Resource Block pair Not used blank resource particle in PRB-pair；

EPDCCH position indication information determines part, for being set according to system configuration information, the terminal of the communication system Standby identifier information and channel quality information, determination are used to indicate position of the ePDCCH in terminal device search space EPDCCH position indication information；And

Bearing part, for the ePDCCH position indication information to be carried to the blank resource particle to be included The subframe of the additional signaling of the ePDCCH position indication information is carried, and sends terminal device for the subframe.

The base station equipment according to scheme 1 of scheme 2., wherein the ePDCCH position indication information includes the terminal The degree of polymerization of equipment search space, and accorded with according to the degree of polymerization of the terminal device search space and the Terminal Equipment Identifier Information determines initial position of the ePDCCH in the terminal device search space.

The base station equipment according to scheme 2 of scheme 3., wherein the degree of polymerization is the Physical Resource Block to PRB- The integral multiple of the number for the enhancing control channel unit eCCE for including in pair.

The base station equipment according to shown in scheme 2 of scheme 4., wherein the ePDCCH position indication information further includes described Offset of the ePDCCH in the terminal device search space.

The base station equipment according to any one of scheme 1-4 of scheme 5., wherein the bearing part is according to the blank The additional signaling is intensively placed into one or more continuous resources using concentration mapping mode by the number of resource particle The additional signaling is placed into multiple resource blocks to PRB- with being distributed in PRB-pair, or using distribution map mode by block In pair.

The base station equipment according to any one of scheme 1-4 of scheme 6., wherein the bearing part is according to the blank The number of resource particle uses the bits of encoded of different length to the additional signaling.

The base station equipment according to any one of scheme 1-4 of scheme 7., wherein the bearing part is according to the terminal Device identifier information, according to any in following mapping mode to the terminal device and the resource block to PRB-pair It is mapped：For the corresponding resource block of one terminal device to PRB-pair, a terminal device corresponds to multiple resource blocks pair PRB-pair, the corresponding resource block of multiple terminal devices correspond to multiple resource blocks pair to PRB-pair or multiple terminal devices PRB-pair。

The base station equipment according to scheme 7 of scheme 8., wherein when same resource block is multiple to being mapped in PRB-pair When terminal device, use Terminal Equipment Identifier symbol information to be scrambled in the same resource block to area in PRB-pair Divide the ePDCCH position indication information of different terminal equipment.

The base station equipment according to any one of scheme 1-4 of scheme 9., wherein the system configuration of the communication system is believed Breath includes：The OFDM symbol number of physical downlink control channel PDCCH carrying and the port number of public reference signal.

A kind of method of configuration enhancing Physical Downlink Control Channel ePDCCH of scheme 10., including：

According to the system configuration information of communication system, determine Physical Resource Block to blank resource not used in PRB-pair Particle；

According to the system configuration information of the communication system, Terminal Equipment Identifier symbol information and channel quality information, determine It is used to indicate the ePDCCH position indication information of position of the ePDCCH in terminal device search space；And

It is described comprising carrying to obtain that the ePDCCH position indication information is carried to the blank resource particle The subframe of the additional signaling of ePDCCH position indication information, and terminal device is sent by the subframe.

A kind of terminal device of detection enhancing Physical Downlink Control Channel ePDCCH of scheme 11., including：

Demodulation part, for receiving the son of the additional signaling comprising carrying ePDCCH position indication information from base station equipment Frame, and demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position indication information It is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position indication information Additional signaling be based on the ePDCCH position indication information is carried to Physical Resource Block to not used in PRB-pair Blank resource particle obtains；And

Detection part is examined in the terminal device search space according to the ePDCCH position indication information that demodulation obtains Survey the ePDCCH.

The terminal device according to scheme 11 of scheme 12., wherein the ePDCCH position indication information includes the end The degree of polymerization of end equipment search space, and accorded with and being believed according to the degree of polymerization and Terminal Equipment Identifier of the terminal device search space Breath determines initial position of the ePDCCH in the terminal device search space.

The terminal device according to scheme 12 of scheme 13., wherein the degree of polymerization is the Physical Resource Block to PRB- The integral multiple of the number for the enhancing control channel unit eCCE for including in pair.

The terminal device according to shown in scheme 12 of scheme 14., wherein the ePDCCH position indication information further includes described Offset of the ePDCCH in the terminal device search space.

The terminal device according to any one of scheme 11-14 of scheme 15., wherein the demodulation part is according to terminal Device identifier information determines resource block that the ePDCCH position indication information is placed on to PRB-pair.

The terminal device according to scheme 15 of scheme 16., wherein when same resource block is to there are multiple in PRB-pair When the ePDCCH position indication information of terminal device, is descrambled using Terminal Equipment Identifier symbol information and carry out the school CRC It tests, with the ePDCCH position indication information in the same resource block to differentiation different terminal equipment in PRB-pair.

A kind of method of detection enhancing Physical Downlink Control Channel ePDCCH of scheme 17., including：

The subframe of the additional signaling comprising carrying ePDCCH position indication information is received from base station equipment, and from described Demodulation obtains the ePDCCH position indication information in subframe, wherein the ePDCCH position indication information is used to indicate described Position of the ePDCCH in terminal device search space, and the additional signaling for carrying the ePDCCH position indication information is Based on the ePDCCH position indication information is carried to Physical Resource Block to blank resource particle not used in PRB-pair It obtains；And

According to the ePDCCH position indication information that demodulation obtains, in the terminal device search space described in detection ePDCCH。

A kind of communication system of scheme 18., including：

Base station equipment comprising：

Bearing part, for the ePDCCH position indication information to be carried to the blank resource particle to be included The subframe of the additional signaling of the ePDCCH position indication information is carried, and sends terminal device for the subframe, with And

Terminal device comprising：

Demodulation part, for receiving the additional signaling comprising carrying ePDCCH position indication information from the base station equipment Subframe, and from the subframe demodulation obtain the ePDCCH position indication information, wherein the ePDCCH position instruction Information is used to indicate position of the ePDCCH in terminal device search space, and carries the ePDCCH position instruction The additional signaling of information is not made in PRB-pair based on the ePDCCH position indication information is carried to Physical Resource Block Blank resource particle obtains；And

For person of an ordinary skill in the technical field, without departing from scope and spirit of the present invention, It obviously can be with many modifications may be made and modification.Embodiment is selected and explained, is to best explain the principle of the present invention And practical application, so that person of an ordinary skill in the technical field is illustrated, the present invention, which can have, is suitble to desired specific use The various embodiments with various changes on way.

Claims

1. a kind of base station equipment of configuration enhancing Physical Downlink Control Channel ePDCCH, including：

Blank resource particle determines part, for the system configuration information according to communication system, determines Physical Resource Block to PRB- Not used blank resource particle in pair；

EPDCCH position indication information determines part, for the system configuration information according to the communication system, terminal device mark Know symbol information and channel quality information, determination is used to indicate position of the ePDCCH in terminal device search space EPDCCH position indication information；And

Bearing part, for the ePDCCH position indication information to be carried to the blank resource particle to obtain comprising carrying There is the subframe of the signaling of the ePDCCH position indication information, and sends terminal device for the subframe.

2. base station equipment according to claim 1, wherein the ePDCCH position indication information includes the terminal device The degree of polymerization of search space, and information is accorded with according to the degree of polymerization of the terminal device search space and the Terminal Equipment Identifier Determine initial position of the ePDCCH in the terminal device search space.

3. base station equipment according to claim 2, wherein the degree of polymerization is the Physical Resource Block in PRB-pair The integral multiple of the number for the enhancing control channel unit eCCE for including.

4. the base station equipment according to shown in claim 2, wherein the ePDCCH position indication information further includes the ePDCCH Offset in the terminal device search space.

5. base station equipment described in any one of -4 according to claim 1, wherein the bearing part is according to the blank resource The signaling is intensively placed into one or more continuous resource blocks to PRB- using concentration mapping mode by the number of particle In pair, or use distribution map mode that the signaling is placed into multiple resource blocks in PRB-pair with being distributed.

6. base station equipment described in any one of -4 according to claim 1, wherein the bearing part is according to the blank resource The number of particle uses the bits of encoded of different length to the signaling.

7. base station equipment described in any one of -4 according to claim 1, wherein the bearing part is according to the terminal device Identifier information carries out the terminal device and the resource block to PRB-pair according to any in following mapping mode Mapping：For the corresponding resource block of one terminal device to PRB-pair, a terminal device corresponds to multiple resource blocks to PRB- Pair, the corresponding resource block of multiple terminal devices correspond to multiple resource blocks to PRB- to PRB-pair or multiple terminal devices pair。

8. base station equipment according to claim 7, wherein when same resource block is to being mapped with multiple terminals in PRB-pair When equipment, use Terminal Equipment Identifier symbol information to be scrambled in the same resource block to being distinguished not in PRB-pair With the ePDCCH position indication information of terminal device.

9. base station equipment described in any one of -4 according to claim 1, wherein the system configuration information packet of the communication system It includes：The OFDM symbol number of physical downlink control channel PDCCH carrying and the port number of public reference signal.

10. a kind of method of configuration enhancing Physical Downlink Control Channel ePDCCH, including：

According to the system configuration information of communication system, determine Physical Resource Block to blank resource grains not used in PRB-pair Son；

It is used for according to the system configuration information of the communication system, Terminal Equipment Identifier symbol information and channel quality information, determination Indicate the ePDCCH position indication information of position of the ePDCCH in terminal device search space；And

The ePDCCH position indication information is carried to the blank resource particle to obtain comprising carrying the ePDCCH The subframe of the signaling of position indication information, and terminal device is sent by the subframe.

11. a kind of terminal device of detection enhancing Physical Downlink Control Channel ePDCCH, including：

Demodulation part, for receiving the subframe of the signaling comprising carrying ePDCCH position indication information from base station equipment, and Demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position indication information is for referring to Show position of the ePDCCH in terminal device search space, and carries the signaling of the ePDCCH position indication information It is to be based on the ePDCCH position indication information being carried to Physical Resource Block to blank resource grains not used in PRB-pair What son obtained；And

Detection part detects institute in the terminal device search space according to the ePDCCH position indication information that demodulation obtains State ePDCCH.

12. terminal device according to claim 11, wherein the ePDCCH position indication information includes that the terminal is set The degree of polymerization of standby search space, and it is true according to the degree of polymerization and Terminal Equipment Identifier of the terminal device search space symbol information Fixed initial position of the ePDCCH in the terminal device search space.

13. terminal device according to claim 12, wherein the degree of polymerization is the Physical Resource Block to PRB-pair In include enhancing control channel unit eCCE number integral multiple.

14. terminal device shown in 2 according to claim 1, wherein the ePDCCH position indication information further includes described Offset of the ePDCCH in the terminal device search space.

15. terminal device described in any one of 1-14 according to claim 1, wherein the demodulation part is according to terminal device Identifier information determines resource block that the ePDCCH position indication information is placed on to PRB-pair.

16. terminal device according to claim 15, wherein when there are multiple terminals in PRB-pair for same resource block When the ePDCCH position indication information of equipment, CRC check is descrambled and carried out using Terminal Equipment Identifier symbol information, with In the same resource block to the ePDCCH position indication information for distinguishing different terminal equipment in PRB-pair.

17. a kind of method of detection enhancing Physical Downlink Control Channel ePDCCH, including：

The subframe of the signaling comprising carrying ePDCCH position indication information is received from base station equipment, and is solved from the subframe Tune obtains the ePDCCH position indication information, wherein the ePDCCH position indication information is used to indicate the ePDCCH and exists Position in terminal device search space, and the signaling for carrying the ePDCCH position indication information is based on will be described EPDCCH position indication information is carried to what Physical Resource Block obtained blank resource particle not used in PRB-pair；And

According to the ePDCCH position indication information that demodulation obtains, the ePDCCH is detected in the terminal device search space.

18. a kind of communication system, including：

Base station equipment comprising：

Bearing part, for the ePDCCH position indication information to be carried to the blank resource particle to obtain comprising carrying There is the subframe of the signaling of the ePDCCH position indication information, and sends terminal device for the subframe, and

Terminal device comprising：

Demodulation part, for receiving the subframe of the signaling comprising carrying ePDCCH position indication information from the base station equipment, And demodulation obtains the ePDCCH position indication information from the subframe, wherein the ePDCCH position indication information is used In position of the instruction ePDCCH in terminal device search space, and carry the ePDCCH position indication information Signaling is provided to blank not used in PRB-pair based on the ePDCCH position indication information is carried to Physical Resource Block Source particle obtains；And